dart 18 styrofoam dislodged, loose in starboard hull

smoked 570 this weekend despite discovering approx 3 ft section of styrofoam loose in hull, taking on no water, cat sails aok, any worries here? should i break up and remove, or is it a good back up flotation device?
nofearofflying is it a good back up flotation device

Yes, it is for a backup flotation.

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Jack B
Hobie 17
BC, Canada
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